97775983 has 2 divisors, whose sum is σ = 97775984. Its totient is φ = 97775982.

The previous prime is 97775971. The next prime is 97775999. The reversal of 97775983 is 38957779.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97775983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97775963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48887991 + 48887992.

It is an arithmetic number, because the mean of its divisors is an integer number (48887992).

Almost surely, 2^97775983 is an apocalyptic number.

97775983 is a deficient number, since it is larger than the sum of its proper divisors (1).

97775983 is an equidigital number, since it uses as much as digits as its factorization.

97775983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The square root of 97775983 is about 9888.1738961246. The cubic root of 97775983 is about 460.6920631939.

The spelling of 97775983 in words is "ninety-seven million, seven hundred seventy-five thousand, nine hundred eighty-three".